Why is there a foil tape covered hole in side of every HDD?

NeoPTLD

Platinum Member
Nov 23, 2001
2,544
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The breather seal is necessary for HDD to function, but what's the purpose of foil tape covered holes found on one side of every HDD?
 

mechBgon

Super Moderator<br>Elite Member
Oct 31, 1999
30,699
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I think its absence would indicate that you unscrewed the screws underneath, which voids your warranty.
 

w00t

Diamond Member
Nov 5, 2004
5,545
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Originally posted by: mechBgon
I think its absence would indicate that you unscrewed the screws underneath, which voids your warranty.

sadface :( for him.

 

Rubycon

Madame President
Aug 10, 2005
17,768
485
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It's the tinfoil hat for your hard drive.

Removing this will allow the military to spy on your data.

It's true I tried it then my computer told me General Failure was reading my hard drive. That's really scary stuff.
 

d2arcturus

Senior member
Oct 18, 2004
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Originally posted by: C6FT7
It's the tinfoil hat for your hard drive.

Removing this will allow the military to spy on your data.

It's true I tried it then my computer told me General Failure was reading my hard drive. That's really scary stuff.


Yeah, you need tin foil. That metal plate on the top does nothing. :D

Edit: under my sarcastic comment and behind my keyboard is a person who laughed his ass off at that joke. I say gg to you. :thumbsup:
 

Concillian

Diamond Member
May 26, 2004
3,751
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I think it's usually the hole where they insert the servo pattern heads.

The servo pattern is the 'formatting' of the drive that help the drive know where the head is during seeks, so it can gauge acceleration and deceleration for getting to the next track, and for it to settle on the exact correct track once it gets near. There are several radial arms that slice the disc into sectors for radial positioning as well.

The drive heads aren't used for servo writing. Servo heads are generally external and inserted into the drive, allowing for higher priced, better precision parts to be used in servo writing, as the servo pattern is vital for drive operation.

I think some manufacturers are looking at using other methods of making servo patterns, but I don't think any have completely eliminated the servo writing step for 100% of it's drives.

At least that's my understanding.